Lock-hinge



(No Model.)

J. WOLF.

. LOOK HINGE. V v No. 324,444. 4 Patented Aug. 18, 1885.

-- Illllll mmw WITNESSES: INVENTO ATTORNEY N. PETERS. Photn-Lhbognpbur, Washington. D Q

UNITED STATES PATENT OFFICE.

J OSEF WOLF, OF I-IOBOKEN, NEIV JERSEY.

LOCK-HINGE.

SPECIFICATION forming part of Letters latent No. 324,444, dated August 18, 1885.

Application filed December 10, 1884.

To all whom it may concern.-

Be it known that I, JosEF WOLF, of Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Look Hinges for Doors, of which the following is a specification.

This invention has reference to an improved lock-hinge for refrigerator and other doors; and theiuvention consists of a lock-hinge one leaf of which-is provided with a notched eccentric, and of a second leaf having a springactuated bolt guided in a socket of said leaf, said bolt looking into the notch of the eccentric. The tension of the bolt-actuating spring is adjusted by a disk and a set-screw that passes through the closed end of the socket and has an enlarged exterior head.

In the accompanying drawings, Figure 1 represents a front view of a refrigerator-door with my improved lock-hinges. Fig. 2 is a vertical transverse section on line x as, Fig. 1; Fig. 3, a vertical transverse section of the lock-hinge drawn on a larger scale, and showing the open position of the hinge in dotted lines. Fig. 4 is a front elevation of my improved lock-hinge, and Fig. 5 a side elevation of the same.

Similar letters of reference indicate corresponding parts.

A in the drawings represents a refrigerator or other door, to which is attached one of the leaves, B, of my improved lock-hinge. The leaf B is provided with an eccentric cam, B, that may either be cast integral with the leaf B or made separate from the same, and retained thereon by means of a recess and ex tension-heel, b, in connection with the pintle b and adjoining sleeves b of the leaf B, as shown in Fig. 4. The eccentric cam B is provided at diametrically-opposite sides with tapering notches d, for'the locking'bolt D of the second leaf 0.

The leaf 0 is attached to the frame of the door and provided with a central guide-socket, O. The locking-bolt D is guided in the socket 0 and made tapering at its outer end. The

(No model.)

bolt D is forced into the notched cam B by a strong spiral spring, D, that is interposed between the inner end of the bolt D and the closed end of the socket C. The tension of the spring D is adjusted by means of a setscrew, E, the shank of which passes through the closed end of the socket G and bears by its inner end on a disk, 0, that presses on the end of the spiral spring D.

The outer end of the screw E is provided with a square or other head, 6, by which it can be easily taken hold of by a wrench or other device for being turned, so as to ad- 6 just the tension of the spiral spring D.

The advantage of my improved lock-hinge for doors is that the door can be locked into open position by the spring-bolt without requiring special locking devices, so as to dis- 6;

pense with hooks and other fastening devices.

In refrigerator doors the lock-hinges sup port the door in upwardly-inclined position, as shown in dotted lines in Fig. 2, as the spring-bolts enter the upper notches of the 7c cams. By exerting a downward pressure on the door the tension of the spring is overcome and the bolts released from the cams and passed along the same until the springbolts engage the opposite notches of the cams, 7 5

and hold thereby the door in closed position without requiring a separate locking device.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The combination of a leaf having a notched 8c cam, a second leaf hinged to the first leaf and provided with a guide-socket, a locking-bolt guided in said socket, a disk guided in the socket, a spiral spring interposed between the locking-bolt and disk, and a set-screw bear- WVitnesses:

CARL KARE, SIDNEY MANN.

JOSEF WVOLF.. 

